Vehicle spring



Jan. 13, 1931. A. L. MOKEE ETAL VEHI CLE SPRING Filed May 29. 1928 [4 11/6111 Q Camp 1/ LEW A llorney Patented Jan. 13, 1931 UNITED STATES PATENT OFFICE A3163 L. MCKEE AND WILLARD D. CAMPBELL, OF SPOKANE, WASHINGTON VEHICLE SPRING Application filed May 29, 1928. Serial No. 281,497.

Our present invention relates to in'iprovements in vehicle springs of the semi-elliptic type and designed particularly for use as Fig. is a. perspective view of the base leaf of the auxiliary spring; and

l ig. 6 is a perspective view of the :tolded shorlt absorbing devices for automotive leaf of the auxiliary spring.

5 vehicle- "he spring device oi our inven- In carrying out our invention. We utilize tion 01" the semi-elliptir type (-oniprising the well known type of senii-elliptie spring a plurality of main leaves rind spaced auxil whirl) usually fixed to the axle of liar v leaves near the opposite ends of the the vehicle at the or niral part :1 and extends main spring wnirh have a normal curvature longi'unlinaliv oi the vehicle with shackles 1o opposite to that of the main leaves. Thus that are pivoted in the eyes I? at the ends of when he auxiliary leaves and the main the main sprin Thensualclipsloom ngspring are secured together to form the ing U-bolts and clamp plates 5 and nuts 6 spring device for an automotive vehicle. the are used at spared intervals on the main oppositely curved auxiliary innings exert sprin".

15 tension near the ends of the main spring In Fig. l. we have shown at A and B two for absorbing vibration when a depressing of the auxiliar springs above the main load is imposed upon the ends of the main spring, and at (l. we have shown one of the leaf spring. auxiliary springs below the main spring.

Th Springs are ll pinged n the it will be apparent that the auxiliary automobile chassis and extend longitudinally springs in be used in several modified Ways thereof. and the auxiliary springs of our ither above or below, or both above and invention are used in front of and at the below the main spring. rear of the central support for the main Each oi the auxiliary sprin s is made up spring, and the auxiliary springs may be t a base leaf 7 that is bowed in usual man- 25 used either above or below the main spring, Her, and provided at its ends With pairs of or both above and belowtho main spring. side flanges P to fit over the edges of the The invention consists in certain novel main spring to prevent lateral displai-enient mimbinaiions and anangenaenis of parts 015 the auxiliary sprin". At the zipproxh between the main semhelliptir spring and mate center of the leaf center, a depression 3:) the auxiliary springs as will hereinafter be 9 is provided as indicated in Fig. 5. in more fully Pointed out and claimed. rombination with the base leaf T. we use a in the accompanying drawings. we hm". folded leaf 1O n'hioh has at one end the side illustrated one complete example of the flanges 11 similar to the flanges 8 of the physical embodiment of our invention showbase leaf '7. This folded leaf 10 has a fold d5 ing two modifications thereof. wherein the 12 which extends to the approximate renter parts are combined and arranged according oi the leaf l and at its end the fold has a to the best mode we have so far devised for depresion 1 which iiis into the depression the practical application oi the principles of 1-. of the lea l 10. The ioldeil leat' alwo has our invention. a bowed wniig 'nration and it lies in mulf igure ,1 is a pi, spective \lGW ol' a semi- (art with the eel T, the rirprmde-na o. l

elliptic spring having the auxiliary springs ol' our invention applied near its ends on n and L bolt l o awynmnodntr iii-i 1i 3 clip. H bolt- Thi i u top of the spring, and a single auxiliary lies in and extends al ng spring is also shown below the main spring; the a, 1 main spring and :1

Fig. 2 is an end View oi the assembly of claim i .6 on the threaded ends oiiin one of the auxiliary springs; J-hoit "nped against the adjoining fare Fig. 3 is a side view of the assembly of of th. ma spring means of the clamp the auxiliary spring of Fig. 2; nut 17. The spring clip at the left in Fig.

l retains the auxiliary spring at the upper Fig. 4 is a perspective view of one of the spring clips; surface of the main spring, and the invert ii! k in Fig, l rvtains lhu auxiliary spring in a 110(llll0(l way. Al thiright. llll base lvaf is iniliratiil as I) am! luvatml ahm'e tlnnnain spring. and tinluliliil lual is ilnlieafr l at L auil lnuateil lMlUW thv main spring. in all raises, the h aws of the auxiliar; spring ham. a (011- ligni-atiwn arrangrwl nppuatvly in that (if the main spring so that u'la n lln hiail is inipnsvil (in tlnina n spring. thv auxiliary [H'lll ih-i'ii'vs iii-a1- tin with: ul' lhtmain spring will ahsnri 1hr slim-ks in viln-atiuns as thn unils ul' tlnmain spring :irifltXCtl. in this llhllllltl'. the linuIu-iug or julting usually .iit'nnipniri'ing rural; springs is ll\'llltlt(l l'nr thv rvasnn that the HllIH'lTS arv ahsorhoil null vmrssivv Eli-King ml: tliv main spring prvvvntvil.

'lhh lulili-il auxiliary spring survvs in laking up the slat-k and maintaining a constant pressui'u on the spring; (lip l3. serving also tn llltVLIlt movement or ilisplai'vnivnt of the dip when the main spring; is uinlii-r oxtrvnw ilvprrssincnt. It serves al o to oasa (u' ahsm'h any shock incident to an vxl'rirnw (llpri ssvil niain spring \\'ll('ll uthvrwisa thv (lip would hang fro aiul Oil the up-thrm=r mntart with i-unsiilerahle leirce.

'IilYlZlgi' thus fully (:ltb'tfl'llllll nur lllYtIllilUn, what we claim as new anil llvsirv to serum: by Ltll'tltl Patient l. The cmnhinatiun with a 11min lmf spring; lit an auxiliary spring device minprising a base leaf having siii lv tlangi-s l0 vngagu tlnmain spring and a nt 'al ileprossiun. a folded leaf an the base leaf having sizhhinges for engagz'enient with said leaf. ainl a spring i-lip far fastening the auxiliary spring ilvvictto tho main spring.

1!. Thu i-umhinatiun with a main leaf spring. at an auxiliary spring: lltYlfl munprisin g; a ham lnat' having a (-vntral (lP])I'0r;- sinn :unl pairs ul' siilr {laughs at ills nulls, saiil h-al' having a illlW'lll'lllt uppusitv in that i-t' lllt main spring t'ulilml 10: l having a iloprossiuu at its i'nlilml vinl anil a sti' nul ilvprv iiui alinml the-rawilh u what in the ilt'in'tssiull nl' thv haslull, siilv tlaugi-s H!) the, t'nhlwl lt-at l'nr ungagi'uivnl with llnhash lwi l'. ainl a spring vlip l'm' sci-tiring tliv auxih i:ll spring tn lhv main spring.

ml spring (lip at thv right l XMUS l1. MiyREltl. \VllIlJA Kl ll. AMPllElJL. 

